Passengers are reminded that a smile is actually a friendship signal, not a sign of weakness. spoof announcement by Emma Clarke Emma Clarke has a pretty nice little website. Emma Clarke was The Voice of The Underground, until she got a bit bored and recorded some Spoof London Underground Announcements. Then she got the sack.My favourite spoof is the one telling Londoners to get their heads out of their asses. But this one is pretty good as well:Would the passenger in the red shirt pretending to read the paper but who is actually staring at that woman’s chest please stop.…